Actor George Takei argued that “in one core, horrifying way,” the family separations occurring at the United States’ southern border are “worse” than the Japanese-American internment camps during World War II.

“At least during the internment, when I was just 5 years old, I was not taken from my parents,” he wrote in an op-ed for Foreign Policy magazine that was published Tuesday. Takei, an American citizen of Japanese ancestry who was detained with his family at camps in Arkansas and California, wrote that there was a “hideous irony” in the comparison.

“At least during the internment, my parents were able to place themselves between the horror of what we were facing and my own childish understanding of our circumstances,” Takei wrote, describing the ways his family protected him from “the grim reality” of their circumstances.

“At least during the internment, we remained a family, and I credit that alone for keeping the scars of our unjust imprisonment from deepening on my soul,” he continued. “I cannot for a moment imagine what my childhood would have been like had I been thrown into a camp without my parents. That this is happening today fills me with both rage and grief: rage toward a failed political leadership who appear to have lost even their most basic humanity, and a profound grief for the families affected.”